Characteristics of Ore-controlling Structures and Ore Emplacement Mechanism in the Shihu Gold Deposit, Hebei Province - A Case Study of the No.101 Vein

被引：0
|
作者：
Yao Y. [1 ]
Li W. [1 ]
Zhang Y. [2 ]
Zhu Y. [1 ]
Wang M. [1 ]
机构：
[1] College of Resource and Civil Engineering, Northeastern University, Shenyang, 110004, Liaoning
[2] Shihu Mining Co. Ltd., China Gold Group, Shijiazhuang, 050500, Hebei
来源：
| 1600年 / Science Press卷 / 41期
关键词：
Fault; Metallogeney; Ore emplacement mechanism; Ore prospecting; Ore-controlling structure; The Shihu gold deposit;
D O I：
10.16539/j.ddgzyckx.2017.04.004
中图分类号：
学科分类号：
摘要：
The Shihu gold deposit lies in the middle-northern Taihang Mountains and is strictly controlled by faults. The ore-controlling structures in the mining district are not well-documented. Detailed field observation and laboratory investigation of the No.101 vein indicated that the ore-controlling structures of the Shihu gold deposit are the pre-Mesozoic shear joints with SN and NW strike that reactivated during the Yanshanian emerged from. The NNW-SSE left-strike-slip stresses during the main mineralization stage led to the dilation of the NW-strike structural segments along the roof and footwall of the early quartz diorite porphyrite veins, which contributed to the extensive wall-rock alteration, intensive gold mineralization and occur as quartz-vein type ores, and consequently the formation of rich ore pillars. On the contrary, the SN-strike compressive structures correspond to the weak wall-rock alteration and gold mineralization and occur as altered-rock type ores. All the rich ore pillars laterally distributed with high-angle (70°±), and wholly pitched southward with 40° angle. According to the structural ore-controlling regularities, the location between the No.47 and the No.61 exploratory line with elevation below 150 m is an excellent ore-prospecting area. Our prospecting proposal based on the ore-controlling structural analyses in the study area has been proven by the underground works in the Shihu gold deposit. © 2017, Science Press. All right reserved.
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页码：678 / 688
页数：10
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